Bug 247829

Summary:	MouseClick offsetX/offsetY different between Safari 15.5 and Safari 16
Product:	WebKit	Reporter:	Richard Robinson <richard_robinson2>
Component:	UI Events	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	webkit-bug-importer, zimmermann
Priority:	P2	Keywords:	InRadar
Version:	Other
Hardware:	Unspecified
OS:	Unspecified

Description Richard Robinson 2022-11-11 15:51:35 PST

When a foreign object is inside an SVG, any click event that occurs on the object has it's `offsetX` and `offsetY` relative to the SVG container rather than the element.

Believed to be a regression from https://bugs.webkit.org/show_bug.cgi?id=234524 , which overrode `offsetFromContainer` in `RenderSVGBlock`, causing the `RenderSVGForeignObject`
to use this override and return an offset of `(0, 0)` instead of its proper offset.

Comment 1 Richard Robinson 2022-11-11 15:51:42 PST

rdar://100517677

Comment 2 Richard Robinson 2022-11-12 19:37:03 PST

Pull request: https://github.com/WebKit/WebKit/pull/6436

Comment 3 EWS 2022-11-14 16:24:49 PST

Committed 256679@main (d5fba35fb6c5): <https://commits.webkit.org/256679@main>

Reviewed commits have been landed. Closing PR #6436 and removing active labels.

Comment 4 Nikolas Zimmermann 2022-11-14 23:39:48 PST

Thanks! I had a PR open which also fixes offsetFromContainer(), good it is fixed already.